Antislipping device



J. E. McKlNNEY.

AN'TISLIPPING DEVICE.

APPLICATION FILED APR.20. 1921.

1;4: O3,799, Patented Jan. 17, 1922.

JIM 12210139 PATENT OFFICE.

JOSEPH E. MCKINNEY, OF MINNEAPOLIS, MINNESOTAV ANTISL-IPPING DEVICE.

Application filed April 20, 1921.

To all whom it may concemt:

Be it known that I, JosnPH E. MCKINNEY, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, hax e invented certain new and useful Improvements in Anti-Slipping Devices, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in anti-slipping devices, and it is an object of the invention to provide a novel and improved device of this general character which, when applied to the tread portion of a wheel, operates effectually to facilitate traction and also to prevent side skidding.

Another object of the invention is to provide a novel and improved device of this general character adapted to be transversely disposed across the tread of a wheel structure and embodying one or more walls or flanges, the contacting edge or edges of which are irregular with no two longitudinal adjacent points thereon lying in the same horizontal or vertical plane.

An additional object of the invention is to provide a novel and improved device of this general character adapted to be disposed transversely across the tread of a wheel structure and including a wall or flange formed with corrugations, the contacting edge of the w all or flange winding up and down and from side to side throughout the length of said wall or flange.

Furthermore, it is an, object of the invention to provide a novel and improved device of this general character embodying a shoe adapted to be disposed transversely of the tread of a wheel structure and which shoe is irregular both as to width and as to the height of the'same, thereby better enabling the shoe to grip more firmly the roadway or other surface and create a mesh therewith.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved anti-slipping device whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitely claimed.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Serial No. 462,943.

In order that my invention may be the better understood, I will now proceed to described the same with reference to the accompanying drawings, wherein:

lFlgure l is a fragmentary view in side elevation illustrating an anti-slipping structure constructed in accordance with an embodiment of my invention and in applied position;

Figure 2 is a view in perspective of one of the tread members or shoes as herein disclosed, unapplied;

Figure 3 is a view in front elevation of a tread member or shoe as herein disclosed, the connecting links being shown in fragment and the wheel structure being diagrammatically indicated by dotted lines;

Figure 4 is a view in top plan of a tread member or shoe as herein disclosed;

Figure 5 is a view in side elevation of a tread member or shoe constructed in accordance with a further embodiment of mv invention;

Figure 6 is a view in plan of the shoe or member as disclosed in Figure 5; and

Figure 7 is a sectional view taken substantially on the line 77 of Figure As disclosed in the accompanying drawings, R denotes the rim of a wheel structure coacting in a conventional manner with a carcass C of an inflatible tire, although my improved device is not limited for use with this particular type of tire. Bridging or straddling the tread portion of the carcass C are the members or shoes M comprised in my improved anti-slipping device. The members or shoes M may be of any desired number in accordance with the requirements of practice and are maintained in desired spaced relation through the instrumentalitv of the side chains S. the opposite end )ortions of each of the members or shoes 3 being operatively connected with the side chains S by the links 1, )referably of the type shown in the accompanying drawings.

Each of the members or shoes M is rigid or non-flexible and comprises an elongated body longitudinally curved to conform closely to the cross sectional configuration of the tread portion of the carcass C when under load. The opposite ends. of the body portion 2 of each of the members or shoes M are provided with outstanding eye members 3 having their inner peripheral portions substantially in continuity'with the inner or under face of the member or shoe M.

. carcass C whenever the wheel structure has a tendency to side skid and, therefore, prevent the member or shoe M from turning around so far that the weight of the vehicle no longer rests on the shoe or member M and which would otherwise occur in the event the side chains S are loosely connected or hooked together.

. The side or longitudinal margins of the body portion 2 of each of the shoes or members M are defined by outstanding flanges or walls 4: arranged in slight convergence toward the body portion 2 and whereby said member or shoe M is substantially U-shaped in cross-section. Each'of the flanges or walls 4 is provided with the corrugations 5 extending transversely of said wallor flange and substantially at right angles to the body portion 2.

The outer marginal portion of each of the walls or flanges 4 or more particularly the outer marginal portions of alternate corrugations are recessed, as at 6, so that each of the flanges or walls 4 has an undulated or serrated contacting edge, the points a and b in said edge forming an irregular curve winding up and down and from side to side throughout the length of said wall, no two longitudinal adjacent points a and b lying in the same horizontal or vertical plane when a member or shoe M is in contact with a roadway or other surface. It is also to he noted that the outer or, high points a of each of the Walls or flanges 4 are substantially coplanar.

The particular formation or construction .of the fl'anges or walls 4, as hereinbefore set forth, is of decided advantage as such flanges or walls provide a recurring and substantial resistance to the surface with which they come in contact and more especially when coming into contact witha car track, the edge of a paving block or other protuberance in a roadway or other surface.

Each of the side chains S is provided-on one end with a fastening member F adapted for detachable engagement with the opposite end portion of the chain so that the complete anti-slipping structure may be readily and conveniently applied to a wheel.

In the embodiment of my invention as illustrated in Figures 5 to 7, I disclose a shoe or member S wherein the body portion 2 is provided with a central outstanding wall or flange 4' positioned at substantially the transverse center of said body portion 2' and substantially coextensive in length with the length of the body portion 2'. This wall or flange 4 is substantially of the same form and construction as the wall" or flange 4 hereinbefore referred to.

Fr In the foregoing description it is thought to be obvious that an anti-slipping device constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:

1. An anti-slipping device for tires including a member adapted to straddle the tread portion of the tire, said member including an outstanding corrugated wall hav-' ing. an undulated contacting edge, the points in said edge forming an irregular curve Winding up and down and from side to side throughout the length of said wall. 2. n anti-slipping device for tires including a member adapted to straddle the tread portion of the tire, said member including an outstanding wall, the outer margin of the wall being serrated, said wall presenting an irregular contacting edge, no two longitudinal adjacent points thereon lying in the same horizontal or vertical planes.

3. An anti-slipping device for, tires including a body member adapted to straddle the tread portion of the tire, said member including an outstanding Wall formed with corrugations extending substantially at right angles with respect to said body member, the turns in said wall extending in the same direction and being notched at their'outer marginal portions to'form an irregular contacting edge winding up and down and from sidp1 to side throughout the length of said wa 4. An anti-slipping device for tires including a body member adapted to straddle signature.

JOSEPH E. MoKINNEY. 

